CPS LS780B Manual De Usuario página 4

ADDITIONAL PARTS INCLUDED
• Spare Ion-Pump® Sensor
• Patented Evaporator Filter Housing
• Carrying Case • Earphone for Noisy Environments
• 4 AA Alkaline Batteries
INSTRUMENT CONTROLS
The instrument features an easy to use 3-position
slide switch as its only control feature. The function of
each of the positions is as follows:
• OFF: Power is always applied
to the micro controller circuitry
of the LS780B. This circuitry
controls the power applied to
the rest
depending on one of several
operating conditions. The OFF
position
controller to suspend all
activities, cut power to all
areas of the circuit and then
go into a "sleep" mode
consuming very little current
but always
switch for user input.
• LO: This is the position that
puts the LS780B into its low
sensitivity
switching from OFF to LOW,
the instrument wakes up, takes note of the
contamination conditions around the sensor, setting
itself to those conditions and notifies the user that it
is ready to function by sounding a low pitch tone at
regular intervals. This tone increases in pitch and
frequency as the leak is approached.
• HI: This is the position that puts the LS780B in its
high sensitivity mode. When switching from OFF to
high, the instrument wakes up, takes note of the
contamination conditions around the sensor, setting
itself to those conditions and notifies the user that it
is ready to function by sounding a higher pitch tone
at regular intervals. This tone increases in pitch and
frequency as the leak is approached.
It is not necessary to go from LO or HI to the OFF
position to clear the instrument. The micro controller
monitors the state of the switch many times each
second and as soon as it detect the change from LO to
HI or vice versa, it resets itself and starts operating in
the new mode.
of the
tells the
watching
mode.
circuit
micro
the
When
4